你自己的心灵是一个神圣的围墙,除非得到你的许可,否则没有任何有害的东西能够进入。
Technology should serve ecology, not the other way around.
We thought that we had the answers, it was the questions we had wrong.
——《在石家庄国民党交通部欢迎会的演说》(1912年9月21日)
In the end, we will remember not the words of our enemies, but the silence of our friends.